Asako is the daughter of a viscount, but she is a social dropout and is treated as a nuisance by her parents. One day, her only beloved sister is proposed to by Kido, a soldier who is rumored to be cold and violent. To stop the marriage, Asako offers to marry in his place, but...!? [Cold-hearted soldier x lonely young lady] A dazzling Taisho era love story that begins with marriage!